If a corn plant has a genotype sstt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant?
(a) st, st
(b) st, st
(c) ss, tt, st, st
(d) st, st, st, st if a corn plant has a genotype sstt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant?
(a) st, st
(b) st, st
(c) ss, tt, st, st
(d) st, st, st, st

The correct answer would be option D.

Explanation:

Pollen of a plant is a gamete, that contains half of the alleles are required to produce the plant. Pollen fuse with stigma and complete the required alleles or genetic information.

Possible combinations in pollen would be one allele from each trait in every form either dominant or recessive. So ST, St, sT, st. would be the correct possible genetic combination present in a single grain.

Thus, the correct answer is option D.

Option D

Explanation:

There are two different traits represented by the term "SsTt". Where "S" is the allele for a dominant trait 1 and "s" is the allele for a recessive trait 1.  Like wise "T" is the allele for a dominant trait 2 and "t" is the allele for recessive trait 2.

In a genetic combination , both the  allels of both the traits will pair up with each other one by one.

i.e "T" will pair up with both "S" and "s" to form "TS" and "Ts" gametes

Similarly "t"will pair up with both "S" and "s" to form "tS" and "ts" gametes

Hence, option D is correct

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.